Product

Supergoop! Poof 100% Mineral Part Powder

A zinc oxide powder with a shaker top, made to dust sunscreen onto a hair part. A niche product for a spot almost nobody protects.

At a Glance

Mixed

The hair part is one of the most-burned and least-protected places on the body, and dermatologists find skin cancers there. Almost nobody puts lotion in their part, so it usually gets no protection at all. A shaker top lets you dust powder straight along the part without greasing your hair.

Powders under-deliver on SPF, because real-world application is far thinner than the tested layer, and through hair it is even harder to know what landed. That is a real limitation. But on a hair part, the honest alternative is nothing, and something imperfect beats nothing.

Do not extend this logic to your face. For skin you can reach, use a lotion. Availability is spotty and Supergoop appears to be moving to an SPF 45 version, so check what you are buying.

Key facts

Key active	Zinc oxide 24.7% (SPF 35)
Texture	SPF 35 powder for the scalp
Best for	The hair part, thinning hairline, and bald spots
Approximate price	$30–38
Fragrance	Fragrance free

How it works

The hair part is one of the most-burned, least-protected places on the body, and dermatologists find skin cancers there. Nobody puts lotion in their part.

The applicator is the product. A shaker top lets you dust powder straight along the part line without greasing your hair. It is a genuinely clever answer to a real gap.

Zinc oxide only, fragrance-free.

Here is the fair case for it: powder sunscreen is a compromised format, but on a hair part the realistic alternative is nothing at all. Something imperfect beats nothing, and this is the rare place where a powder is the sensible choice rather than a lazy one.

Everyday habits

How to use it

When: Before sun exposure, and to reapply during the day.How much: Powders go on thin, so you will not reach the label SPF from powder alone. Dust a visible layer along the part. Where: The hair part, thinning hairline, and bald spots. For skin you can reach, use a lotion instead. Reapply: Every 2 hours outdoors, and after sweating or swimming. Best use: This is for spots where lotion is impractical. A hat does the job better for long hours outdoors.

Who should be careful+

Powders under-deliver on SPF. The same caveat applies as to every powder sunscreen — real-world application is a fraction of the thickness the SPF was tested at. On a scalp, through hair, it is even harder to know what actually landed.

Do not extend this logic to your face. For skin you can reach, use a lotion. A powder is a compromise you accept only where a lotion is impossible.

A hat does this job better. If you are going to be out in real sun for hours, wear one. This is for the days you will not.

Availability is spotty, and Supergoop appears to be moving the line to an SPF 45 version — check what you are buying.

Questions people ask+

Is this mineral or chemical?Mineral. The only active is zinc oxide.

Where should I use it?On the hair part and scalp, where lotion is impractical.

Can I use it as my only sunscreen?No. Use a lotion on skin you can reach.

Is it fragrance-free?Yes.

What SPF is it?SPF 35.

Full ingredient list+

Active ingredients: Zinc Oxide 24.7%

Inactive ingredients: Calcium Aluminum Borosilicate, Silica, Trimethylsiloxysilicate, Calcium Sodium Borosilicate, Polymethyl Methacrylate, Lauroyl Lysine, Polyglyceryl-10 Pentaisostearate, Boron Nitride, Triethoxycaprylysilane, Ethylhexylglycerin, Nylon-6/12, Sodium Dehydroacetate, Olive Glycerides, Ascorbyl Palmitate, Ceramide 3, Iron Oxides (CI 77492, 77491, 77499)

References+

1. Impact of scalp location on survival in head and neck melanoma: A retrospective cohort study (https://doi.org/10.1016/j.jaad.2016.08.009) — Backs the claim that the scalp/hair-part region is a genuine skin-cancer site: scalp melanomas have more aggressive features and roughly twice the mortality of melanoma located elsewhere. 2. Survival Differences Between Patients With Scalp or Neck Melanoma and Those With Melanoma of Other Sites in the Surveillance, Epidemiology, and End Results (SEER) Program (https://doi.org/10.1001/archderm.144.4.515) — Supports that the scalp is an under-examined, high-risk site: scalp/neck melanoma had significantly worse survival than melanoma elsewhere, and the authors urge clinicians to examine the scalp carefully. 3. Quantity of sunscreen used by European students (https://doi.org/10.1046/j.1365-2133.2001.04016.x) — Supports 'powders under-deliver on SPF' by the same mechanism as all sunscreens: users applied a median 0.39 mg/cm2 versus the 2 mg/cm2 SPF-testing standard, so most people do not get the labeled SPF. 4. The likelihood of sunburn in sunscreen users is disproportionate to the SPF (https://doi.org/10.1111/phpp.12033) — Supports that real-world application delivers less protection than the label implies, because thin and uneven application over the skin causes erythema even with SPF15/SPF30 products. 5. Sunscreens: An Update (https://doi.org/10.1007/s40257-017-0290-0) — Supports that zinc oxide is a broad-spectrum inorganic (mineral) UV filter covering both UVA and UVB, backing the 'zinc oxide only' broad-spectrum framing of the product.